KR20020022419A - Ink composition for ink jet printer - Google Patents

Ink composition for ink jet printer Download PDF

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KR20020022419A
KR20020022419A KR1020000055198A KR20000055198A KR20020022419A KR 20020022419 A KR20020022419 A KR 20020022419A KR 1020000055198 A KR1020000055198 A KR 1020000055198A KR 20000055198 A KR20000055198 A KR 20000055198A KR 20020022419 A KR20020022419 A KR 20020022419A
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ink composition
parts
weight
content
group
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KR1020000055198A
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Korean (ko)
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KR100393056B1 (en
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유승민
장승순
차준회
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윤종용
삼성전자 주식회사
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Priority to KR10-2000-0055198A priority Critical patent/KR100393056B1/en
Priority to US09/791,575 priority patent/US6582501B2/en
Priority to CNB011047933A priority patent/CN1234787C/en
Priority to DE60135531T priority patent/DE60135531D1/en
Priority to EP20010301847 priority patent/EP1191078B1/en
Priority to JP2001128865A priority patent/JP4012372B2/en
Publication of KR20020022419A publication Critical patent/KR20020022419A/en
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00Inks
    • C09D11/30Inkjet printing inks
    • C09D11/38Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes

Abstract

PURPOSE: An ink composition for an ink jet printer is provided to improve the storage stability, the wettability at a nozzle, and the dryness, water fastness and smear fastness after jetting. CONSTITUTION: The ink composition comprises 1.0-10.0 wt% of a chromophore; 34.0-97.6 wt% of a solvent; 1.0-20.0 wt% of a cosolvent; 0.1-20.0 wt% of a humectant; 0.1-10.0 wt% of a surfactant; 0.1-5.0 wt% of a viscosity controlling agent; and 0.1-10 wt% of a storage stabilizer, wherein the storage stabilizer is an N-containing heterocycle compound represented by the formula 1. Preferably the chromophore is a pigment or a dye; the solvent is water; the cosolvent is selected from the group consisting of ethanol, isopropanol, butanol, pentanol and their mixtures; the humectant is selected from the group consisting of glycerin, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, hexylene glycol, 1,3-butanediol, 1,4-butanediol, 1,5-butanediol, 1,5-pentanediol, 2-butene-1,4-diol, 2-methyl-2-pentanediol, and their mixtures; and the viscosity controlling agent is selected from the group consisting of poly(vinyl alcohol), casein, carboxy methyl cellulose and their mixtures.

Description

잉크 젯트 프린터용 잉크 조성물{Ink composition for ink jet printer}Ink composition for ink jet printers

본 발명은 잉크 젯트 프린터용 잉크 조성물에 관한 것으로서, 보다 상세하기로는 염료 기반 잉크 및 안료 기반 잉크에서 저장 안정성이 우수하고 노즐에서의 습윤성이 탁월할 뿐만 아니라, 제팅후 건조성 및 내수성(waterfastness) 및 내마찰번짐성(smearfastness)이 개선된 잉크 젯트 프린터용 잉크 조성물에 관한 것이다.The present invention relates to an ink composition for an ink jet printer, and more particularly, to excellent storage stability and excellent wettability at a nozzle in dye-based and pigment-based inks, as well as drying and waterfastness after jetting and An ink composition for an ink jet printer having improved smearfastness.

잉크 젯트 프린팅은 비접촉식 프린팅(non-impact printing) 방식의 하나로서 접촉식 프린팅 방식(impact printing)에 비하여 소음이 적고 레이저 빔 프린터에 비해 칼라 구현이 비교적 용이하다는 장점을 지니고 있다.Ink jet printing is one of the non-impact printing methods, which has the advantages of lower noise and relatively easy color implementation compared to laser beam printers compared to the contact printing method.

비접촉식 프린팅 방식은 다시 연속 잉크 젯트(continuous ink jet) 방식과 드롭-온-디멘드(drop-on-demand: 이하 "DOD"라고 함) 방식으로 구분가능하다. 여기서 연속 잉크 젯트 방식은 잉크를 연속적으로 제팅하는 동안 전자기장을 변화시켜 잉크의 방향을 조절함으로써 프린팅하는 방식이다. 반면, DOD 방식은 잉크를 미세한 방울 별로 제팅하여 프린팅하는 방식으로서, 열-버블식 잉크 젯트(thermal-bubble ink jet) 방식과 압전식 잉크 젯트(piezoelectric ink jet) 방식으로 나뉘어진다. 이 때 전자 방식은 잉크를 가열하여 발생하는 버블의 팽창에서 발생하는압력을 이용하여 제팅하는 데 반하여, 후자 방식은 전기에 의하여 역학적으로 변형을 일으키는 압전판을 사용하여 압력을 발생시켜 잉크를 제팅한다.Non-contact printing methods can be further divided into continuous ink jet methods and drop-on-demand (DOD) methods. Here, the continuous ink jet method is a method of printing by controlling the direction of the ink by changing the electromagnetic field while continuously jetting the ink. On the other hand, the DOD method is a method of printing ink by jetting droplets, and is divided into a thermal-bubble ink jet method and a piezoelectric ink jet method. In this case, the former method jets using the pressure generated from the expansion of the bubble generated by heating the ink, whereas the latter method jets the ink by generating pressure using a piezoelectric plate which is mechanically deformed by electricity. .

한편, 잉크 젯트 프린터용 잉크 조성물은 기본적으로 색을 나타내는 색소체(chromophore)와 이를 포함하는 유동체(vehicle)로 구성된다. 그러나 이를 잉크 젯트 프린터에 적용하여 칼라 인쇄에 응용하려면 잉크 조성물은 상술한 작동기구에서 기대한 대로 제팅되는 물성을 지녀야 하며 제팅된 후 대상 매체에 잘 흡착 또는 흡수되어 바라는 바대로의 화상을 이룰 수 있어야 한다. 즉, 다음과 같은 항목에서 적절한 성능을 나타내야 하므로 이를 만족시키기 위해 각종 첨가제를 혼합하게 된다.On the other hand, the ink composition for an ink jet printer is basically composed of a color (chromophore) and a fluid containing the same (chromophore). However, in order to apply it to color printing by applying it to an ink jet printer, the ink composition must have the property of jetting as expected in the above-mentioned operating mechanism, and after being jetted, the ink composition must be well adsorbed or absorbed by the target medium to form an image as desired. do. In other words, it is necessary to exhibit the appropriate performance in the following items to mix the various additives to satisfy this.

(1) 점도(voscosity)와 표면장력(surface tension)... 화상의 선명성(optical density, dot uniformity)과 제팅 안정성(jetting stability)(1) Viscosity and surface tension ... optical density, dot uniformity and jetting stability

(2) 건조시간(drying time)... 번짐성(bleeding)(2) drying time ... bleeding

(3) 저장안정성(storage stability)(3) storage stability

(4) 칼라 구현성(hue, lightness, saturation)(4) color implementability (hue, lightness, saturation)

(5) 프린터 헤드, 미디어(종이, OHP 필름)와의 친화성(attraction with media & device)... 내마찰번짐(smearfastness), 화상의 내수성(waterfastness)(5) Printer head, affinity with media (paper, transparencies) ... smearfastness, waterfastness of images

잉크 조성물에서 상술한 성능을 구현시키기 위한 첨가제중의 하나로서, 2-피롤리돈(2-pyrrolidone), N-메틸-2-피롤리돈(N-methyl-2-pyrrolidone), 1,3-디메틸-2-이미다졸리디논(1,3-dimethyl-2-imidazolidinone)과 같은 질소를 포함한 여러 가지 헤테로고리 화합물을 이용함으로써 잉크 조성물을 제팅하기 전 상태에서는 저장안정성과 습윤성을 개선시키면서 제팅된 후에는 건조성을 향상시키는 방법이 제안되었다(미국 특허 제5,108,503, 5,858,075, 5,980,622, 5,990,202, 6,057,384, 5,641,346, 5,679,724, 5,936,008, 5,969,033, 6,025,412, 5,324,349, 5,421,871, 5,690,723, 5,704,969, 5,972,086, 6,039,796, 6,095,645).As one of the additives for implementing the above-mentioned performance in the ink composition, 2-pyrrolidone, N-methyl-2-pyrrolidone, 1,3- By using various heterocyclic compounds including nitrogen such as dimethyl-2-imidazolidinone (1,3-dimethyl-2-imidazolidinone) before and after jetting the ink composition, after jetting while improving storage stability and wettability Has been proposed (US Pat. Nos. 5,108,503, 5,858,075, 5,980,622, 5,990,202, 6,057,384, 5,641,346, 5,679,724, 5,936,008, 5,969,033, 6,025,412, 5,324,349, 5,421,871, 5,690,769,5,690,769,5,690,769

상기 특허들에 따라 첨가제로서 2-피롤리돈(2-pyrrolidone), N-메틸-2-피롤리돈(N-methyl-2-pyrrolidone), 1,3-디메틸-2-이미다졸리디논(1,3-dimethyl-2-imidazolidinone)과 같은 질소를 포함한 헤테로고리 화합물을 이용하면, 저장안정성, 습윤성 및 건조성이 개선되는데, 이러한 작용효과가 나타나는 것은 다음과 같이 설명가능하다.According to the patents, 2-pyrrolidone, N-methyl-2-pyrrolidone, 1,3-dimethyl-2-imidazolidinone ( The use of heterocyclic compounds containing nitrogen, such as 1,3-dimethyl-2-imidazolidinone), improves storage stability, wettability and dryness, which can be explained as follows.

질소 함유 헤테로고리 화합물은 쌍극자 모멘트가 물보다 크다. 따라서, 이 화합물들은 물과 쌍극자-쌍극자 상호작용을 할 수 있으며 분자 단위 상태에서 물과 섞이는 혼화성(miscibility)을 갖고 있다. 그리고 색소체에 용해성을 부여하는 이온기 주위에서 물보다 강한 친화력을 갖고 있으므로 색소체의 용해성을 지속적으로 유지하여 색소체를 함유하는 잉크 조성물을 카트리지 안에 보관하는 기간동안 색소체끼리의 엉김과 그에 따른 침전물이 생성되지 않는다.Nitrogen containing heterocyclic compounds have a dipole moment greater than water. Thus, these compounds are capable of dipole-dipole interactions with water and have miscibility with water in the molecular state. In addition, since it has a stronger affinity than water around the ionic groups that impart solubility to the pigment, the solubility of the pigment is continuously maintained so that entanglement between the pigments and sediment is not generated during the storage of the ink composition containing the pigment in the cartridge. Do not.

한편, 노즐 부분은 카트리지 개봉후 잉크가 공기중에 노출되어 휘발 성분이 증발되면 노즐이 막혀 제팅이 불가능해지는 클로깅(clogging)이 일어나기 쉽다. 이를 막기 위해서는 잉크 조성물에는 어느 정도 습윤성이 요구된다. 그러나, 일단 제팅된 후에는 빠르게 건조되어 인접해 출력된 다른 색의 잉크와 번지는 일이 없어야 하며, 손에 묻어나오거나 하는 일도 없어야 하므로 제팅된 후에는 빠른 건조성이필요하게 된다. 이에 대해, 질소 함유 헤테로 고리 화합물은 그 자체의 증기압이 작고 물과의 친화력으로 물의 증발을 막음으로써 노즐이 습윤 상태로 유지될 수 있도록 하여 클로깅(clogging)을 방지한다. 그리고 질소 함유 헤테로 고리 화합물은 표면장력이 낮아서 일단 제팅되어 종이위에 떨어진 잉크 방울이 종이의 다공성 조직내로 잘 침투할 수 있기 때문에 표면에서의 건조가 촉진되는 것이다.On the other hand, when the nozzle is opened, the ink is exposed to the air after the cartridge is opened, and when the volatile component evaporates, the nozzle is clogged, so that clogging which becomes impossible to jetting easily occurs. In order to prevent this, the ink composition requires some wettability. However, once jetted, it should be quickly dried to prevent smearing with other colored inks outputted adjacently, and it should not be smeared on the hand, so that quick drying is required after jetting. In contrast, the nitrogen-containing heterocyclic compound has a low vapor pressure of its own and prevents the evaporation of water by its affinity with water so that the nozzle can be kept wet to prevent clogging. In addition, the nitrogen-containing heterocyclic compound has low surface tension, so that ink droplets jetted once on the paper can easily penetrate into the porous tissue of the paper, thereby promoting drying on the surface.

그런데, 상기 방법에 따른 잉크 조성물은 색소체중 염료 기반 잉크(dye-based ink)에 대해서는 제팅되기 전 상태에서의 저장안정성과 습윤성 및 제팅된 후의 건조성을 개선시키지만, 안료 기반 잉크(pigment-based ink)에 대해서는 저장안정성의 개선 효과가 미미한데, 이는 염료와는 달리 안료에는 물에 용해시키기에 필요한 이온기의 수가 부족하여 기존의 질소 함유 헤테로고리 화합물이 효과적으로 작용할 수 없는데 기인한다. 또한 염료 기반 잉크의 경우에는 출력 및 건조된 후 물에 의하여 잉크가 번지는 현상이 여전히 만족스럽지 못한 상태이며, 손으로 문지를 경우 묻어나는 현상(smearing)이 발생하여 인쇄 품질이 저하되는 문제점이 있다.By the way, the ink composition according to the above method improves the storage stability and wettability in the state before being jetted to the dye-based ink in the dye body, and the drying property after being jetted, but is pigment-based ink. As for the effect of improving the storage stability, the pigment is due to the lack of the number of ionic groups required to dissolve in water, unlike the dye, the existing nitrogen-containing heterocyclic compound can not effectively work. In addition, in the case of dye-based ink, the phenomenon of ink spreading by water after being printed and dried is still unsatisfactory, and there is a problem in that print quality is degraded due to smearing when rubbed by hand.

본 발명이 이루고자 하는 기술적 과제는 상기 문제점을 해결하여 염료 기반 잉크뿐만 아니라 안료 기반 잉크에서도 저장 안정성 및 노즐에서의 습윤성이 탁월하며 제팅후 건조성 및 내수성 및 내마찰번짐성이 개선된 잉크 젯트 프린터용 잉크 조성물을 제공하는 것이다.The technical problem to be solved by the present invention is to solve the above problems for ink-jet printers that have excellent storage stability and wettability at the nozzle in the pigment-based ink as well as dye-based ink, and improved drying and water resistance and bleed resistance after jetting It is to provide an ink composition.

상기 기술적 과제를 이루기 위하여 본 발명에서는, 색소체, 용매, 공용매(cosolvent), 습윤제, 계면활성제, 점도조절제 및 저장안정제를 포함하며,In order to achieve the above technical problem, the present invention includes a dye, a solvent, a cosolvent, a humectant, a surfactant, a viscosity modifier, and a storage stabilizer.

상기 저장안정제가 화학식 1로 표시되는 질소 함유 헤테로고리 화합물인 것을 특징으로 하는 잉크 젯트 프린터용 잉크 조성물을 제공한다.The storage stabilizer is a nitrogen-containing heterocyclic compound represented by the formula (1) provides an ink composition for an ink jet printer.

<화학식 1><Formula 1>

상기식중, R1과 R2는 서로에 관계없이 -CH2OH, -CH2CH2OH, -CH2CH(OH)(CH2)n1CH3(n1=1∼5), -CH2CH(OH)(CH2)n2OH(n2=1∼6), -CH2CH(OH)(CH2)n3NH2(n3=1∼6), -CH2CH2O(CH2CH2O)n4CH2CH2OH(n4=1∼10), -CH2CH(OH)(CH2CH2O)n5CH2CH2OH(n5=1∼10), -CH2CH(OH)(CH2CH2NH)n6CH2CH2OH(n6=1∼9), -CH2CH(OH)(CH2CH(OH))n7CH2CH2OH(n7=1∼10), -CH2CH(OH)(CH2CH(CN))n8CH2CH2OH(n8=1∼10), -CH2CH(OH)(CH2CH(COONH2))n9CH2CH2OH(n9=1∼10), CH2CH(OH)(CH2CH(COO(CH2)mNH2))n10CH2CH2OH(n10=1∼10, m=1∼5)로 이루어진 군으로부터 선택된 하나이고,In the above formula, R 1 and R 2 are -CH 2 OH, -CH 2 CH 2 OH, -CH 2 CH (OH) (CH 2 ) n1 CH 3 (n1 = 1 to 5), -CH irrespective of each other. 2 CH (OH) (CH 2 ) n2 OH (n2 = 1 to 6), -CH 2 CH (OH) (CH 2 ) n3 NH 2 (n3 = 1 to 6), -CH 2 CH 2 O (CH 2 CH 2 O) n 4 CH 2 CH 2 OH (n 4 = 1 to 10), -CH 2 CH (OH) (CH 2 CH 2 O) n 5 CH 2 CH 2 OH (n 5 = 1 to 10), -CH 2 CH (OH) (CH 2 CH 2 NH) n 6 CH 2 CH 2 OH (n 6 = 1 to 9), -CH 2 CH (OH) (CH 2 CH (OH)) n 7 CH 2 CH 2 OH (n7 = 1 to 10), -CH 2 CH (OH) (CH 2 CH (CN)) n8 CH 2 CH 2 OH (n8 = 1-10), -CH 2 CH (OH) (CH 2 CH (COONH 2 )) n9 CH 2 CH 2 OH (n9 = 1-10), CH 2 CH (OH) (CH 2 CH (COO (CH 2 ) m NH 2 )) n10 CH 2 CH 2 OH (n10 = 1-10, m = 1∼ 5) one selected from the group consisting of,

R3은 -(CH2)xCH(R4)CH(R5)(CH2)y-이고(0≤x+y≤8),R 3 is-(CH 2 ) x CH (R 4 ) CH (R 5 ) (CH 2 ) y- (0≤x + y≤8),

R4와 R5는 서로에 관계없이 -H, -CH3, -CH2OH, -CH2CH2OH, CH2CH(OH)(CH2)n1CH3(n1=1∼5), -CH2CH(OH)(CH2)n2OH(n2=1∼6), -CH2CH(OH)(CH2)n3NH2(n3=1∼6), -CH2CH2O(CH2CH2O)n4CH2CH2OH(n4=1∼10), -CH2CH(OH)(CH2CH2O)n5CH2CH2OH(n5=1∼10), -CH2CH(OH)(CH2CH2NH)n6CH2CH2OH(n6=1∼9), -CH2CH(OH)(CH2CH(OH))n7CH2CH2OH(n7=1∼10), -CH2CH(OH)(CH2CH(CN))n8CH2CH2OH(n8=1∼10), -CH2CH(OH)(CH2CH(COONH2))n9CH2CH2OH(n9=1∼10), CH2CH(OH)(CH2CH(COO(CH2)mNH2))n10CH2CH2OH(n10=1∼10, m=1∼5)로 이루어진 군으로부터 선택된 하나이다.R 4 and R 5 are independently of each other -H, -CH 3 , -CH 2 OH, -CH 2 CH 2 OH, CH 2 CH (OH) (CH 2 ) n1 CH 3 (n1 = 1 to 5), -CH 2 CH (OH) (CH 2 ) n2 OH (n2 = 1-6), -CH 2 CH (OH) (CH 2 ) n3 NH 2 (n3 = 1-6), -CH 2 CH 2 O ( CH 2 CH 2 O) n 4 CH 2 CH 2 OH (n 4 = 1 to 10), -CH 2 CH (OH) (CH 2 CH 2 O) n 5 CH 2 CH 2 OH (n 5 = 1 to 10), -CH 2 CH (OH) (CH 2 CH 2 NH) n 6 CH 2 CH 2 OH (n 6 = 1-9), -CH 2 CH (OH) (CH 2 CH (OH)) n 7 CH 2 CH 2 OH (n 7 = 1-10), -CH 2 CH (OH) (CH 2 CH (CN)) n8 CH 2 CH 2 OH (n8 = 1-10), -CH 2 CH (OH) (CH 2 CH (COONH 2 )) n9 CH 2 CH 2 OH (n9 = 1-10), CH 2 CH (OH) (CH 2 CH (COO (CH 2 ) m NH 2 )) n10 CH 2 CH 2 OH (n10 = 1-10, m = 1 to 5).

본 발명에 따른 잉크 젯트 프린터용 잉크 조성물은 색소체, 용매, 공용매, 습윤제, 계면활성제, 점도조절제 및 저장안정제를 포함하여 이루어지며, 상기 저장안정제로서 화학식 1의 질소 함유 헤테로고리 화합물을 사용한 데 그 특징이 있다.The ink composition for an ink jet printer according to the present invention comprises a dye, a solvent, a cosolvent, a humectant, a surfactant, a viscosity modifier, and a storage stabilizer, and the nitrogen-containing heterocyclic compound of formula 1 is used as the storage stabilizer. There is a characteristic.

<화학식 1><Formula 1>

상기식중, R1과 R2는 서로에 관계없이 -CH2OH, -CH2CH2OH, -CH2CH(OH)(CH2)n1CH3(n1=1∼5), -CH2CH(OH)(CH2)n2OH(n2=1∼6), -CH2CH(OH)(CH2)n3NH2(n3=1∼6), -CH2CH2O(CH2CH2O)n4CH2CH2OH(n4=1∼10), -CH2CH(OH)(CH2CH2O)n5CH2CH2OH(n5=1∼10), -CH2CH(OH)(CH2CH2NH)n6CH2CH2OH(n6=1∼9), -CH2CH(OH)(CH2CH(OH))n7CH2CH2OH(n7=1∼10), -CH2CH(OH)(CH2CH(CN))n8CH2CH2OH(n8=1∼10), -CH2CH(OH)(CH2CH(COONH2))n9CH2CH2OH(n9=1∼10), CH2CH(OH)(CH2CH(COO(CH2)mNH2))n10CH2CH2OH(n10=1∼10, m=1∼5)로 이루어진 군으로부터 선택된 하나이고,In the above formula, R 1 and R 2 are -CH 2 OH, -CH 2 CH 2 OH, -CH 2 CH (OH) (CH 2 ) n1 CH 3 (n1 = 1 to 5), -CH irrespective of each other. 2 CH (OH) (CH 2 ) n2 OH (n2 = 1 to 6), -CH 2 CH (OH) (CH 2 ) n3 NH 2 (n3 = 1 to 6), -CH 2 CH 2 O (CH 2 CH 2 O) n 4 CH 2 CH 2 OH (n 4 = 1 to 10), -CH 2 CH (OH) (CH 2 CH 2 O) n 5 CH 2 CH 2 OH (n 5 = 1 to 10), -CH 2 CH (OH) (CH 2 CH 2 NH) n 6 CH 2 CH 2 OH (n 6 = 1 to 9), -CH 2 CH (OH) (CH 2 CH (OH)) n 7 CH 2 CH 2 OH (n7 = 1 to 10), -CH 2 CH (OH) (CH 2 CH (CN)) n8 CH 2 CH 2 OH (n8 = 1-10), -CH 2 CH (OH) (CH 2 CH (COONH 2 )) n9 CH 2 CH 2 OH (n9 = 1-10), CH 2 CH (OH) (CH 2 CH (COO (CH 2 ) m NH 2 )) n10 CH 2 CH 2 OH (n10 = 1-10, m = 1∼ 5) one selected from the group consisting of,

R3은 -(CH2)xCH(R4)CH(R5)(CH2)y-이고(0≤x+y≤8),R 3 is-(CH 2 ) x CH (R 4 ) CH (R 5 ) (CH 2 ) y- (0≤x + y≤8),

R4와 R5는 서로에 관계없이 -H, -CH3, -CH2OH, -CH2CH2OH, CH2CH(OH)(CH2)n1CH3(n1=1∼5), -CH2CH(OH)(CH2)n2OH(n2=1∼6), -CH2CH(OH)(CH2)n3NH2(n3=1∼6), -CH2CH2O(CH2CH2O)n4CH2CH2OH(n4=1∼10), -CH2CH(OH)(CH2CH2O)n5CH2CH2OH(n5=1∼10), -CH2CH(OH)(CH2CH2NH)n6CH2CH2OH(n6=1∼9), -CH2CH(OH)(CH2CH(OH))n7CH2CH2OH(n7=1∼10), -CH2CH(OH)(CH2CH(CN))n8CH2CH2OH(n8=1∼10), -CH2CH(OH)(CH2CH(COONH2))n9CH2CH2OH(n9=1∼10), CH2CH(OH)(CH2CH(COO(CH2)mNH2))n10CH2CH2OH(n10=1∼10, m=1∼5)로 이루어진 군으로부터 선택된 하나이다.R 4 and R 5 are independently of each other -H, -CH 3 , -CH 2 OH, -CH 2 CH 2 OH, CH 2 CH (OH) (CH 2 ) n1 CH 3 (n1 = 1 to 5), -CH 2 CH (OH) (CH 2 ) n2 OH (n2 = 1-6), -CH 2 CH (OH) (CH 2 ) n3 NH 2 (n3 = 1-6), -CH 2 CH 2 O ( CH 2 CH 2 O) n 4 CH 2 CH 2 OH (n 4 = 1 to 10), -CH 2 CH (OH) (CH 2 CH 2 O) n 5 CH 2 CH 2 OH (n 5 = 1 to 10), -CH 2 CH (OH) (CH 2 CH 2 NH) n 6 CH 2 CH 2 OH (n 6 = 1-9), -CH 2 CH (OH) (CH 2 CH (OH)) n 7 CH 2 CH 2 OH (n 7 = 1-10), -CH 2 CH (OH) (CH 2 CH (CN)) n8 CH 2 CH 2 OH (n8 = 1-10), -CH 2 CH (OH) (CH 2 CH (COONH 2 )) n9 CH 2 CH 2 OH (n9 = 1-10), CH 2 CH (OH) (CH 2 CH (COO (CH 2 ) m NH 2 )) n10 CH 2 CH 2 OH (n10 = 1-10, m = 1 to 5).

상기 화학식 1의 질소 함유 헤테로 고리 화합물은, 특히 R1과 R2가 모두 -CH2OH이고, R3가 -CH2CH2-(x=y=0, R4=R5=H)인 1,3-비스(하이드록시메틸)-2-이미다졸리디논인 것이 바람직하다.In particular, the nitrogen-containing heterocyclic compound of Chemical Formula 1 is particularly preferred that both R 1 and R 2 are -CH 2 OH, and R 3 is -CH 2 CH 2- (x = y = 0, R 4 = R 5 = H). It is preferable that it is 1, 3-bis (hydroxymethyl) -2-imidazolidinone.

저장안정제로서 화학식 1의 구조식을 갖는 질소 함유 헤테로고리 화합물을 이용하면 다음과 같은 효과를 얻을 수 있다.When the nitrogen-containing heterocyclic compound having the structural formula of Formula 1 is used as a storage stabilizer, the following effects can be obtained.

첫째, R1, R2, R4, R5에 하이드록시기를 도입하여 물과의 혼화성이 향상되면서 노즐에서의 습윤성이 더욱 향상된다.First, by introducing a hydroxyl group to R 1 , R 2 , R 4 , R 5 , the miscibility with water is improved, and the wettability at the nozzle is further improved.

둘째, R1, R2, R4, R5에 질소 원자 함유 치환기를 도입하여 염료와의 친화력이 증가되고 제팅후 종이의 하이드록시기와의 친화력이 향상되어 색소체가 종이의 표면에 더욱 견고하게 흡착된다. 그 결과, 내번짐마찰성이 개선된다.Second, by introducing nitrogen atom-containing substituents into R 1 , R 2 , R 4 , and R 5 , the affinity with the dye is increased and the affinity with the hydroxyl group of the paper is improved after jetting, so that the pigment is more firmly adsorbed on the surface of the paper. do. As a result, the bleed resistance and friction are improved.

셋째, 색소체로서 안료가 사용되는 경우, 안료에 대하여 기존의 질소 함유 헤테로고리 화합물에 비하여 안료에 대하여 더 친화적으로 작용하며, 함께 사용된 분산제를 도와 분산성을 더욱 효과적으로 향상시킨다. 따라서, 색소체로서 안료를 사용하더라도 잉크 조성물 제팅전 상태에서의 저장안정성, 습윤성 및 제팅후의 건조성 향상 효과가 우수하다.Third, when a pigment is used as the pigment, the pigment acts more friendly to the pigment than the conventional nitrogen-containing heterocyclic compound, and helps the dispersant used together to more effectively improve dispersibility. Therefore, even when the pigment is used as the dye, the effect of improving the storage stability, wettability, and drying property after jetting in the ink composition before jetting is excellent.

상기 저장안정제의 함량은 잉크 조성물 100 중량부를 기준으로 하여 0.1 내지 10 중량부이다. 여기에서 저장안정제의 함량이 10 중량부를 초과하면 표면장력이 너무 작아 종이에 잉크 조성물이 너무 깊이 스며들어 인쇄된 화상이 선명한 색상을 갖지 못하며, 0.1 중량부 미만이면 저장 안정성 효과가 미미하여 바람직하지 못하다.The content of the storage stabilizer is 0.1 to 10 parts by weight based on 100 parts by weight of the ink composition. If the content of the storage stabilizer exceeds 10 parts by weight, the surface tension is too small so that the ink composition penetrates into the paper so deeply that the printed image does not have a vivid color, and if it is less than 0.1 part by weight, the storage stability effect is not preferable.

본 발명의 잉크 조성물에서 색소체는 염료와 안료 모두 사용가능하며, 잉크 조성물에서 통상적으로 사용되는 것이라면 모두 다 사용가능하다. 상기 염료의 구체적인 예로서 C.I, 디렉트 블랙 9(C.I. Direct Black 9), 17, 19, 22, 32, 51, 56, 91, 94, 97, 166, 168, 173, 199, C.I, 디렉트 블루 1(C.I. Direct Blue 1),10, 15, 22, 77, 78, 80, 200, 201, 202, 203, 207, 211, C.I, 디렉트 레드 2(C.I. Direct Red 2), 4, 9, 23, 31, 39, 63, 72, 83, 84, 89, 111, 173, 184, 240, C.I, 디렉트 옐로우 8(C.I. Direct Yellow 8), 9, 11, 12, 27, 28, 29, 33, 35, 39, 41, 44, 50, 53, 58 등이 있고, 안료의 구체적인 예로서 카본 블랙, 그래파이트, 유리 카본(vitreous carbon), 활성화된 차콜(activated charcoal), 활성화된 탄소(activated carbon), 안트라퀴논(anthraquinone), 프탈로시아닌 블루(phthalocyanine blue), 프탈로시아닌 그린, 디아조스(diazos), 모노아조스(monoazos), 피란트론(pyranthrones), 페릴렌(perylene), 퀴나크리돈(quinacridone), 인디고이드계 안료(indigoid pigments) 등이 있다.In the ink composition of the present invention, the dye may be used both as a dye and a pigment, and may be used as long as it is commonly used in the ink composition. Specific examples of the dyes include CI, CI Direct Black 9, 17, 19, 22, 32, 51, 56, 91, 94, 97, 166, 168, 173, 199, CI, and Direct Blue 1 ( CI Direct Blue 1), 10, 15, 22, 77, 78, 80, 200, 201, 202, 203, 207, 211, CI, CI Direct Red 2, 4, 9, 23, 31, 39, 63, 72, 83, 84, 89, 111, 173, 184, 240, CI, CI Direct Yellow 8, 9, 11, 12, 27, 28, 29, 33, 35, 39, 41, 44, 50, 53, 58 and the like, and specific examples of the pigment include carbon black, graphite, vitreous carbon, activated charcoal, activated carbon, and anthraquinone. ), Phthalocyanine blue, phthalocyanine green, diazocyanate, diazos, monooazos, pyranthrones, perylene, quinacridone, indigoid pigments pigments).

색소체의 함량은 잉크 조성물 100 중량부를 기준으로 하여 1.0 내지 10.0 중량부인 것이 바람직하다. 만약 색소제의 함량이 1.0 중량부 미만이면, 광학밀도가 너무 감소하게 되고, 10.0 중량부를 초과하면, 점도가 너무 커져서 제팅이 불안정해지는 문제점이 있다.The content of the dye is preferably 1.0 to 10.0 parts by weight based on 100 parts by weight of the ink composition. If the content of the colorant is less than 1.0 part by weight, the optical density is too reduced, if it exceeds 10.0 parts by weight, the viscosity is too large, there is a problem that the jetting becomes unstable.

습윤제는 잉크 조성물의 노즐에서의 클로깅을 방지하는 역할을 한다. 이러한역할을 하는 물질로는 다가알콜(polyhydric alcohol)을 사용하는데, 구체적인 예로서 글리세린, 에틸렌 글리콜, 디에틸렌 글리콜, 트리에틸렌 글리콜, 프로필렌 글리콜, 디프로필렌 글리콜, 헥실렌 글리콜, 1,3-부탄디올, 1,4-부탄디올, 1,5-펜탄디올, 2-부텐-1,4-디올, 2-메틸-2-펜탄디올 및 그 혼합물이 있다. 그리고 습윤제의 함량은 잉크 조성물을 기준으로 하여 0.1 내지 20.0 중량부인 것이 바람직하다. 습윤제의 함량이 20.0 중량부를 초과하면 점도가 크게 증가하여 잉크 젯트 프린터용으로 적합하지 못하며, 0.1 중량부 미만이면 용해성 저하로 노즐 막힘 현상이 일어나기 용이하므로 바람직하지 못하다.Wetting agents serve to prevent clogging at the nozzles of the ink composition. Polyhydric alcohol is used as a material that plays such a role, and specific examples include glycerin, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, hexylene glycol, 1,3-butanediol, 1,4-butanediol, 1,5-pentanediol, 2-butene-1,4-diol, 2-methyl-2-pentanediol and mixtures thereof. And the content of the humectant is preferably 0.1 to 20.0 parts by weight based on the ink composition. If the content of the humectant exceeds 20.0 parts by weight, the viscosity is greatly increased, which is not suitable for an ink jet printer. If the amount of the wetting agent is less than 0.1 parts by weight, nozzle clogging may easily occur due to a decrease in solubility.

본 발명의 잉크 조성물을 구성하는 계면활성제는 잉크 조성물의 표면장력을 조절하여 노즐에서의 제팅 성능을 안정화시키는 역할을 수행한다. 이러한 기능을 수행하는 계면활성제로는 음이온성 계면활성제나 비이온성 계면활성제를 사용한다. 상기 음이온성 계면활성제의 예로는 탄소수 1 내지 1000의 알킬카르복실산의 염(바람직하게는 탄소수 10 내지 200의 알킬카르복실산의 염), 탄소수 1 내지 1000의 알콜 술폰산 에스테르의 염(바람직하게는 탄소수 10 내지 200의 알콜 술폰산 에스테르의 염), 탄소수 1 내지 1000의 알킬술폰산의 염(바람직하게는 탄소수 10 내지 200의 알킬술폰산의 염), 탄소수 1 내지 1000의 알킬벤젠술폰산의 염(바람직하게는 탄소수 10 내지 200의 알킬벤젠술폰산의 염), 그 혼합물이 있고, 비이온성 계면활성제의 예로는 폴리옥시에틸렌 알킬 에테르(단, 알킬은 탄소수 1 내지 1000의 알킬기이고, 바람직하게는 탄소수 10 내지 200의 알킬기임), 폴리옥시에틸렌 알킬 페닐 에테르(단, 알킬은 탄소수 1 내지 1000의 알킬기, 바람직하게는 탄소수 10 내지200의 알킬기임), 폴리옥시에틸렌 이차 알콜 에테르, 폴리옥시에틸렌-옥시프로필렌 블록 코폴리머, 폴리글리세린 지방산 에스테르, 소르비탄 지방산 에스테르, 그 혼합물이 있다.The surfactant constituting the ink composition of the present invention serves to stabilize the jetting performance at the nozzle by adjusting the surface tension of the ink composition. Anionic surfactants or nonionic surfactants are used as the surfactant for performing this function. Examples of the anionic surfactants include salts of alkyl carboxylic acids having 1 to 1000 carbon atoms (preferably salts of alkyl carboxylic acids having 10 to 200 carbon atoms) and salts of alcohol sulfonic acid esters having 1 to 1000 carbon atoms. Salts of alcohol sulfonic acid esters of 10 to 200 carbon atoms, salts of alkyl sulfonic acids of 1 to 1000 carbon atoms (preferably salts of alkyl sulfonic acids of 10 to 200 carbon atoms), salts of alkylbenzenesulfonic acids of 1 to 1000 carbon atoms (preferably Salts of alkylbenzenesulfonic acids having 10 to 200 carbon atoms, and mixtures thereof, and examples of nonionic surfactants include polyoxyethylene alkyl ethers, provided that alkyl is an alkyl group having 1 to 1000 carbon atoms, preferably 10 to 200 carbon atoms. Alkyl group), polyoxyethylene alkyl phenyl ether, provided that alkyl is an alkyl group having 1 to 1000 carbon atoms, preferably an alkyl group having 10 to 200 carbon atoms, polyoxyethylene secondary Call ether, polyoxyethylene-oxypropylene block copolymer, polyglycerin fatty acid ester, sorbitan fatty acid ester, a mixture thereof.

상기 계면활성제로서 특히 폴리옥사이드계 물질을 사용하는 경우, 이 폴리옥사이드계 물질은 글리콜계 물질과 유사한 화학구조를 가지므로 증발에 의한 노즐에서의 막힘 현상을 막아 증발억제제 역할도 수행할 수 있다.In particular, when the polyoxide-based material is used as the surfactant, since the polyoxide-based material has a chemical structure similar to that of the glycol-based material, it may also serve as an evaporative inhibitor by preventing a clogging phenomenon in the nozzle by evaporation.

계면활성제의 함량은 잉크 조성물 100 중량부를 기준으로 하여 0.1 내지 10.0 중량부를 사용한다. 만약 계면활성제의 함량이 10.0 중량부를 초과하면 조성물의 점도가 지나치게 증가하여 제팅이 어려워지고 0.1 중량부 미만이면 계면활성제로서의 효과가 발현되지 않는다.The content of the surfactant is used from 0.1 to 10.0 parts by weight based on 100 parts by weight of the ink composition. If the content of the surfactant exceeds 10.0 parts by weight, the viscosity of the composition is excessively increased, making jetting difficult and less than 0.1 parts by weight, the effect as a surfactant is not expressed.

점도조절제는 원할한 제팅이 유지될 수 있도록 점도를 조절하는 물질로서, 폴리비닐알콜, 카세인, 카르복시메틸셀룰로오즈중에서 선택된 하나를 사용한다. 여기서 점도조절제의 함량은 잉크 조성물 100 중량부를 기준으로 하여 0.1 내지 5.0 중량부인 것이 바람직하다. 만약 점도조절제의 함량이 5.0 중량부를 초과하면 점도가 너무 커져서 제팅이 일어나지 않고, 0.1 중량부 미만이면 점도가 너무 작아서 너무 많은 양이 한꺼번에 제팅되는 현상이 발생되므로 바람직하지 못하다.Viscosity modifiers are those which control the viscosity to maintain a desired jetting, and use one selected from polyvinyl alcohol, casein, and carboxymethylcellulose. The content of the viscosity modifier is preferably 0.1 to 5.0 parts by weight based on 100 parts by weight of the ink composition. If the content of the viscosity modifier exceeds 5.0 parts by weight, the viscosity is too large and jetting does not occur, and if it is less than 0.1 part by weight, the viscosity is too small, so it is not preferable because too many amounts are jetted at once.

상술한, 저장안정제, 습윤제, 점도조절제 및 계면활성제를 용해하는데 사용되는 용매로는 물 등을 사용한다. 이 용매의 함량은 잉크 조성물을 기준으로 하여 34.0 내지 97.6 중량부를 사용한다.As a solvent used to dissolve the above-described storage stabilizer, wetting agent, viscosity regulator and surfactant, water and the like are used. The content of this solvent is 34.0 to 97.6 parts by weight based on the ink composition.

본 발명에서 공용매로는 알콜류를 사용하는데, 이 물질은 종이에 침투하는성질이 뛰어나 캐리어로서 용매 특성을 향상시키고 휘발성이 물보다 크므로 인쇄된 후에 건조시간을 단축시키는 역할을 한다. 공용매의 함량은 잉크 조성물 100 중량부를 기준으로 하여 1.0 내지 20.0 중량부이다. 만약 공용매의 함량이 20.0 중량부를 초과하면 노즐에서의 건조가 너무 빨리 일어나 막힘이 일어나기 쉽고, 1.0 중량부 미만이면 종이에 인쇄된 후의 건조시간이 너무 길어져 인쇄된 상이 번져 좋은 화상을 얻을 수 없다는 문제점이 있다.In the present invention, alcohols are used as cosolvents, and this material has excellent properties of penetrating into paper, thereby improving solvent properties as a carrier and shortening drying time after printing because of greater volatility than water. The content of the cosolvent is 1.0 to 20.0 parts by weight based on 100 parts by weight of the ink composition. If the content of the cosolvent is more than 20.0 parts by weight, drying at the nozzle is too early to cause clogging, and if it is less than 1.0 part by weight, the drying time after printing on the paper is too long, resulting in a blurred image resulting in a poor image. There is this.

상술한 바와 같은 조성을 갖는 잉크 조성물을 제조하는 방법에 대하여 살펴보면 다음과 같다.Looking at the method for producing an ink composition having a composition as described above are as follows.

먼저, 용매에 저장안정제, 점도조절제, 계면활성제 및 습윤제를 부가하여 혼합한 다음, 이를 50 내지 80℃에서 교반기에서 충분히 교반하여 균일한 상태로 만들어준다. 이 때 교반기에서의 혼합물의 온도를 50 내지 80℃로 유지시키면, 고르고 안정적인 혼합상태를 얻을 수 있는 잇점이 있다. 만약 혼합물의 온도가 50℃ 미만인 경우에는 미세 상분리에 의하여 고른 혼합상태를 얻기가 어렵고, 80℃를 초과하면 활발한 분자 운동으로 안정적인 혼합상태를 얻기가 힘들다는 문제점이 있다.First, a storage stabilizer, a viscosity modifier, a surfactant, and a humectant are added to the solvent, mixed, and then sufficiently stirred in a stirrer at 50 to 80 ° C. to make a uniform state. At this time, if the temperature of the mixture in the stirrer is maintained at 50 to 80 ℃, there is an advantage to obtain an even and stable mixing state. If the temperature of the mixture is less than 50 ℃ it is difficult to obtain an even mixed state by the fine phase separation, if it exceeds 80 ℃ there is a problem that it is difficult to obtain a stable mixed state by active molecular motion.

이어서, 상기 혼합물의 온도를 30 내지 40℃로 낮춘 다음, 색소체와 공용매를 부가하여 더 교반한다. 여기서 혼합물의 온도를 30 내지 40℃로 낮추는 이유는 알콜의 증발이 크게 일어나지 않으면서도 미세 상분리가 일어나지 않는 조건을 만들기 위함이다.Subsequently, the temperature of the mixture is lowered to 30 to 40 ° C., and then the coloring matter and the cosolvent are added and further stirred. The reason for lowering the temperature of the mixture to 30 to 40 ℃ is to create a condition in which fine phase separation does not occur even though the evaporation of alcohol does not occur significantly.

그 후, 상기 결과물을 필터에 통과시켜 여과함으로써 본 발명에 따른 잉크 조성물이 얻어진다.Thereafter, the resultant is passed through a filter and filtered to obtain an ink composition according to the present invention.

한편, 양자 역학 모델링 방법을 이용하여, 본 발명에 따른 잉크 조성물에서 저장안정제로서 화학식 1의 질소 함유 헤테로고리 화합물중의 하나인 1,3-비스(하이드록시메틸)-2-이미다졸리디논을 사용한 경우와 종래기술에 따라 저장안정제로서 N-메틸-2-피롤리돈을 사용한 경우를 비교한 결과, 전자 경우가 후자의 경우에 비하여 물과의 혼화성이 우수하면서 저장안정성이 우수하다는 것을 예측할 수 있었다. 이러한 예상 결과는 하기 실시예 및 비교예에 의하여 확인할 수 있었다.Meanwhile, using a quantum mechanical modeling method, 1,3-bis (hydroxymethyl) -2-imidazolidinone, which is one of the nitrogen-containing heterocyclic compounds of Formula 1, is used as a storage stabilizer in the ink composition according to the present invention. As a result of comparing the case of using N-methyl-2-pyrrolidone as a storage stabilizer according to the prior art, it can be predicted that the former case has better storage stability and better miscibility with water than the latter case. Could. This expected result was confirmed by the following examples and comparative examples.

이하, 본 발명을 하기 실시예를 들어 설명하기로 하되, 본 발명이 하기 실시예로만 한정되는 것은 아니다.Hereinafter, the present invention will be described with reference to the following examples, but the present invention is not limited only to the following examples.

<실시예 1><Example 1>

에탄올 3 중량부, 글리세린 5 중량부, 폴리옥시에틸렌 에틸에테르알킬 0.2 중량부, 폴리(비닐알콜) 0.2 중량부 및 1,3-비스(하이드록시메틸)-2-이미다졸리디논 1 중량부를 혼합한 다음, 이를 기계적 교반기안에서 50 내지 80℃에서 1시간동안 교반하여 균일한 상태로 만들어 주었다.3 parts by weight of ethanol, 5 parts by weight of glycerin, 0.2 parts by weight of polyoxyethylene ethyl ether alkyl, 0.2 parts by weight of poly (vinyl alcohol) and 1 part by weight of 1,3-bis (hydroxymethyl) -2-imidazolidinone Then, it was stirred for 1 hour at 50 to 80 ℃ in a mechanical stirrer to make a uniform state.

상기 혼합물의 온도를 30 내지 40℃로 낮추고 여기에 C.I. 디렉트 블랙 168 3 중량부와 증류수 87.6 중량부를 첨가하여 1시간동안 더 교반하였다. 이와 같이 얻어진 조성물을 0.40㎛의 멤브레인 필터(membrane filter)에 통과시킴으로써 잉크 조성물을 얻었다.The temperature of the mixture is lowered to 30 to 40 ° C. and the 3 parts by weight of Direct Black 168 and 87.6 parts by weight of distilled water were added, followed by further stirring for 1 hour. The ink composition was obtained by passing the composition thus obtained through a 0.40 micrometer membrane filter.

<실시예 2><Example 2>

1,3-비스(하이드록시메틸)-2-이미다졸리디논의 함량을 2 중량부로 사용하고 증류수 함량을 86.6 중량부로 사용한 것을 제외하고는, 실시예 1과 동일한 방법에따라 실시하여 잉크 조성물을 얻었다.An ink composition was prepared according to the same method as Example 1 except for using 2 parts by weight of 1,3-bis (hydroxymethyl) -2-imidazolidinone and 86.6 parts by weight of distilled water. Got it.

<실시예 3><Example 3>

1,3-비스(하이드록시메틸)-2-이미다졸리디논의 함량을 3 중량부로 사용하고 증류수 함량을 85.6 중량부로 사용한 것을 제외하고는, 실시예 1과 동일한 방법에 따라 실시하여 잉크 조성물을 얻었다.An ink composition was prepared according to the same method as Example 1 except for using 3 parts by weight of 1,3-bis (hydroxymethyl) -2-imidazolidinone and 85.6 parts by weight of distilled water. Got it.

<실시예 4><Example 4>

C.I. 디렉트 블랙 168 대신 카본 블랙을 사용하고, 증류수 함량이 84.3 중량부 , 폴리옥시에틸렌 알킬 에테르 함량이 0.5 중량부이고, 1,3-비스(하이드록시메틸)-2-이미다졸리디논의 함량이 4 중량부인 것을 제외하고는, 실시예 1과 동일한 방법에 따라 실시하여 잉크 조성물을 얻었다.C.I. Carbon black is used instead of Direct Black 168, the content of distilled water is 84.3 parts by weight, the content of polyoxyethylene alkyl ether is 0.5 parts by weight, and the content of 1,3-bis (hydroxymethyl) -2-imidazolidinone is 4 Except for the weight part, it carried out according to the same method as Example 1 to obtain an ink composition.

<실시예 5>Example 5

증류수 함량이 85.3 중량부이고, 1,3-비스(하이드록시메틸)-2-이미다졸리디논 함량이 5 중량부인 것을 제외하고는 실시예 4와 동일한 방법에 따라 실시하여 잉크 조성물을 얻었다.An ink composition was obtained in the same manner as in Example 4 except that the distilled water content was 85.3 parts by weight and the 1,3-bis (hydroxymethyl) -2-imidazolidinone content was 5 parts by weight.

<실시예 6><Example 6>

증류수 함량이 86.3 중량부이고, 1,3-비스(하이드록시메틸)-2-이미다졸리디논 함량이 6 중량부인 것을 제외하고는 실시예 4와 동일한 방법에 따라 실시하여 잉크 조성물을 얻었다.An ink composition was obtained in the same manner as in Example 4 except that the distilled water content was 86.3 parts by weight and the 1,3-bis (hydroxymethyl) -2-imidazolidinone content was 6 parts by weight.

<실시예 7><Example 7>

1,3-비스(하이드록시메틸)-2-이미다졸리디논 1 중량부 대신 화학식 1의 화합물(R1, R2, R4, R5가 모두 -CH2CH2OH인 경우) 2중량부를 사용하고 증류수 함량이 86.6 중량부인 것을 제외하고는, 실시예 1과 동일한 방법에 따라 실시하여 잉크 조성물을 얻었다.Instead of 1 part by weight of 1,3-bis (hydroxymethyl) -2-imidazolidinone, 2 parts by weight of the compound of formula 1 (when R1, R2, R4, and R5 are all -CH 2 CH 2 OH), and distilled water Except that the content is 86.6 parts by weight, it was carried out in the same manner as in Example 1 to obtain an ink composition.

<실시예 8><Example 8>

화학식 1의 화합물(R1, R2, R4, R5가 모두 -CH2CH2OH인 경우) 대신 화학식 1의 화합물(R1, R2, R4, R5가 모두 -CH2CH(OH)CH2CH2OH인 경우)을 사용한 것을 제외하고는, 실시예 1과 동일한 방법에 따라 실시하여 잉크 조성물을 얻었다.The compounds of formula 1 (R1, R2, R4, R5, if all of the -CH 2 CH 2 OH) instead of compound of formula 1 (R1, R2, R4, R5 are all -CH 2 CH (OH) CH 2 CH 2 OH Was carried out in the same manner as in Example 1, except that the ink composition was obtained.

<실시예 9>Example 9

화학식 1의 화합물(R1, R2, R4, R5가 모두 -CH2CH2OH인 경우) 대신 화학식 1의 화합물(R1, R2가 모두 -CH2CH2OH이고, R4, R5가 모두 -CH2CH(OH)(CH2CH2O)2CH2CH2OH인 경우)을 사용한 것을 제외하고는, 실시예 1과 동일한 방법에 따라 실시하여 잉크 조성물을 얻었다.Instead of compounds of formula 1 (where R1, R2, R4, R5 are all -CH 2 CH 2 OH), compounds of formula 1 (R1, R2 are all -CH 2 CH 2 OH, and R4, R5 are all -CH 2 An ink composition was obtained in the same manner as in Example 1 except that CH (OH) (for CH 2 CH 2 O) 2 CH 2 CH 2 OH was used.

<실시예 10><Example 10>

화학식 1의 화합물(R1, R2, R4, R5가 모두 -CH2CH2OH인 경우) 대신 화학식 1의 화합물(R1, R2가 모두 -CH2CH2OH이고, R4, R5가 모두 -CH2CH(OH)CH2CH2NH인 경우)을 사용한 것을 제외하고는, 실시예 1과 동일한 방법에 따라 실시하여 잉크 조성물을 얻었다.Instead of compounds of formula 1 (where R1, R2, R4, R5 are all -CH 2 CH 2 OH), compounds of formula 1 (R1, R2 are all -CH 2 CH 2 OH, and R4, R5 are all -CH 2 An ink composition was obtained in the same manner as in Example 1 except that CH (OH) CH 2 CH 2 NH was used).

<실시예 11><Example 11>

화학식 1의 화합물(R1, R2, R4, R5가 모두 -CH2CH2OH인 경우)의 함량이 4 중량부이고, 증류수의 함량이 84.6 중량부인 것을 제외하고는, 실시예 7과 동일한 방법에 따라 실시하여 잉크 조성물을 얻었다.In the same manner as in Example 7, except that the content of the compound of Formula 1 (R1, R2, R4, R5 are all -CH 2 CH 2 OH) is 4 parts by weight, the content of distilled water is 84.6 parts by weight It carried out accordingly and obtained the ink composition.

<실시예 12><Example 12>

화학식 1의 화합물(R1, R2, R4, R5가 모두 -CH2CH(OH)CH2CH2OH인 경우)의 함량이 4 중량부이고, 증류수의 함량이 84.6 중량부인 것을 제외하고는, 실시예 8과 동일한 방법에 따라 실시하여 잉크 조성물을 얻었다.Except that the content of the compound of Formula 1 (when R1, R2, R4, and R5 are all -CH 2 CH (OH) CH 2 CH 2 OH) is 4 parts by weight, and the content of distilled water is 84.6 parts by weight. It carried out in the same manner as in Example 8 to obtain an ink composition.

<실시예 13>Example 13

화학식 1의 화합물(R1, R2가 모두 -CH2CH2OH이고, R4, R5가 모두 -CH2CH(OH)(CH2CH2O)2CH2CH2OH인 경우)의 함량이 4 중량부이고, 증류수의 함량이 84.6 중량부인 것을 제외하고는, 실시예 9와 동일한 방법에 따라 실시하여 잉크 조성물을 얻었다.When the compound of formula 1 (R1, R2 are both -CH 2 CH 2 OH, and R4, R5 are all -CH 2 CH (OH) (CH 2 CH 2 O) 2 CH 2 CH 2 OH) content of 4 Except for the parts by weight and the content of distilled water is 84.6 parts by weight, it was carried out in the same manner as in Example 9 to obtain an ink composition.

<실시예 14><Example 14>

화학식 1의 화합물(R1, R2가 모두 -CH2CH2OH이고, R4, R5가 모두 -CH2CH(OH)CH2CH2NH인 경우)의 함량이 84.6 중량부이고, 증류수의 함량이 4 중량부인 것을 제외하고는, 실시예 10과 동일한 방법에 따라 실시하여 잉크 조성물을 얻었다.When the compound of Formula 1 (R1, R2 are all -CH 2 CH 2 OH, R4, R5 are all -CH 2 CH (OH) CH 2 CH 2 NH) and the content of distilled water Except for 4 parts by weight, the same procedure as in Example 10 was carried out to obtain an ink composition.

<비교예 1-3><Comparative Example 1-3>

1,3-비스(하이드록시메틸)-2-이미다졸리디논 대신 N-메틸-2-피롤리돈을 사용한 것을 실시예 1-3과 동일한 방법에 따라 실시하여 잉크 조성물을 얻었다.N-methyl-2-pyrrolidone was used in place of 1,3-bis (hydroxymethyl) -2-imidazolidinone in the same manner as in Example 1-3 to obtain an ink composition.

<비교예 4-6><Comparative Example 4-6>

1,3-비스(하이드록시메틸)-2-이미다졸리디논 대신 N-메틸-2-피롤리돈을 사용한 것을 실시예 4-6과 동일한 방법에 따라 실시하여 잉크 조성물을 얻었다.N-methyl-2-pyrrolidone was used in place of 1,3-bis (hydroxymethyl) -2-imidazolidinone in the same manner as in Example 4-6 to obtain an ink composition.

상기 실시예 1-14 및 비교예 1-6에 따라 제조된 잉크 조성물의 특성을 하기 방법에 따라 평가하였다.The properties of the ink compositions prepared according to Examples 1-14 and Comparative Examples 1-6 were evaluated according to the following methods.

(1) 저장 안정성(storage stability)(1) storage stability

내열성 유리병에 잉크 조성물 100㎖를 저장한 다음, 입구를 밀봉하고 0 내지 60℃로 조절된 항온실에 저장한다. 이를 2개월동안 방치한 다음, 상기 잉크 조성물을 프린팅에 적용하여 하기 기준에 따라 평가한다.100 ml of the ink composition is stored in a heat resistant glass bottle, and then the inlet is sealed and stored in a thermostat controlled to 0 to 60 ° C. It is left for 2 months and then the ink composition is subjected to printing and evaluated according to the following criteria.

○: 이상이 발견되지 않음○: No abnormality found

×: 프린팅이 되지 않거나 변질됨×: No printing or deterioration

(2) 광학밀도(optical density)(2) optical density

광학밀도측정기(Macbeth사, TR-1224)를 이용하여 인쇄물의 광학밀도를 측정하여 평균광학밀도를 하기 기준에 따라 평가한다.The optical density of the printed matter was measured using an optical density meter (Macbeth, TR-1224) to evaluate the average optical density according to the following criteria.

○: 1.0 이상○: 1.0 or more

△: 0.9∼1.0△: 0.9 to 1.0

×: 0.9 미만×: less than 0.9

(3) 내수성(waterfastness)(3) waterfastness

출력한 지 1 시간 경과후 출력물을 물에 담갔을 때 조성물 성분이 물에 다시 녹아나오는 정도를 조사하기 위하여 물에 담그기 전후의 광학밀도 변화를 측정한다.After 1 hour of printing, when the printed material is immersed in water, the change in optical density before and after immersion in water is measured to examine the extent to which the composition components are dissolved in water again.

○: 광학밀도의 변화가 10% 미만임○: change in optical density is less than 10%

△: 광학밀도의 변화가 10∼30% 정도임Δ: change in optical density is about 10 to 30%

×: 광학밀도의 변화가 30%를 초과함×: change in optical density exceeds 30%

(4) 내마찰번짐성(smearfastness)(4) smearfastness

출력한 지 1 시간후에 출력된 상을 피셔 사이언티픽사(Fisher Scientific Co.)에서 제조된 라텍스 검사 글러브(latex examination glove)를 착용한 손가락으로 문질러 번짐 여부를 판단한다.One hour after printing, the printed image is rubbed with a finger wearing a latex examination glove manufactured by Fisher Scientific Co.

○: 번짐이 없음○: no bleeding

△: 번짐이 약간 발생함△: Smudge occurs slightly

×: 심하게 번짐×: Severe spreading

(5) 토출성(jettability)(5) jettability

조성물을 기존의 잉크 젯트 프린터의 잉크 카트릿지 용기에 담가 프린팅을 실시하여 인쇄 가능여부를 측정하였다.The composition was immersed in an ink cartridge container of an existing ink jet printer and printed to determine whether printing was possible.

○: 인쇄가 잘 됨○: prints well

×: 노즐 입구가 막혀 인쇄가 되지 않음×: Nozzle opening blocked, no printing

상술한 방법에 따라 실시예 1-14 및 비교예 1-6에 따른 잉크 조성물의 특성 평가 결과는 하기 표 1 및 2와 같다.According to the method described above, the evaluation results of the properties of the ink compositions according to Examples 1-14 and Comparative Examples 1-6 are as shown in Tables 1 and 2 below.

구분division 저장안정성Storage stability 광학밀도Optical density 내수성Water resistance 내마찰번짐성Resistance to friction 토출성Ejectability 실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 실시예 4Example 4 실시예 5Example 5 실시예 6Example 6 실시예 7Example 7 실시예 8Example 8 실시예 9Example 9 실시예 10Example 10 실시예 11Example 11 실시예 12Example 12 실시예 13Example 13 실시예 14Example 14 비교예 1Comparative Example 1 ×× ×× 비교예 2Comparative Example 2 비교예 3Comparative Example 3 비교예 4Comparative Example 4 ×× ×× 비교예 5Comparative Example 5 ×× 비교예 6Comparative Example 6

상기 표 1에서 알 수 있는 바와 같이, 저장안정제로서 1,3-비스(하이드록시메틸)-2-이미다졸리디논을 사용하면서 색소체로서 염료를 사용한 경우(실시예 1-3)와 저장안정제로서 1,3-비스(하이드록시메틸)-2-이미다졸리디논을 사용하면서 색소체로서 안료를 사용한 경우(실시예 4-6)는 모두 저장안정제로서 N-메틸-2-피롤리돈을 사용한 경우(비교예 1-6)에 비하여 저장안정성, 내수성 및 내마찰번짐성이 우수하였다. 또한, 저장안정제로서 화학식 1의 화합물(R1, R2, R4, R5가 모두 -CH2CH2OH인 경우), 화학식 1의 화합물(R1, R2, R4, R5가 모두 -CH2CH(OH)CH2CH2OH인 경우), 화학식 1의 화합물(R1, R2가 모두 -CH2CH2OH이고, R4, R5가 모두 -CH2CH(OH)(CH2CH2O)2CH2CH2OH인 경우) 및 화학식 1의 화합물(R1, R2가 모두 -CH2CH2OH이고, R4, R5가 모두 -CH2CH(OH)CH2CH2NH인 경우)을 사용한 경우(실시예 7-14)도 모두 저장안정성, 내수성 및 내마찰번짐성 특성이 실시예 1-6과 동일한 수준으로 양호하다는 것을 확인할 수 있었다.As can be seen in Table 1 above, when 1,3-bis (hydroxymethyl) -2-imidazolidinone is used as the dye and a dye is used as the storage stabilizer (Examples 1-3) and as a storage stabilizer, When pigment was used as a pigment while using 1,3-bis (hydroxymethyl) -2-imidazolidinone (Example 4-6), when N-methyl-2-pyrrolidone was used as a storage stabilizer Compared with (Comparative Example 1-6), the storage stability, water resistance, and friction resistance were excellent. In addition, as a storage stabilizer, a compound of formula 1 (when R 1, R 2 , R 4, and R 5 are all —CH 2 CH 2 OH), and a compound of formula 1 (R1, R2, R4, R5 are all —CH 2 CH (OH) CH 2 CH 2 OH), a compound of Formula 1 (R1, R2 are both -CH 2 CH 2 OH, and R4, R5 are both -CH 2 CH (OH) (CH 2 CH 2 O) 2 CH 2 CH 2 OH) and the compound of formula 1 (where R1 and R2 are both -CH 2 CH 2 OH and R4 and R5 are both -CH 2 CH (OH) CH 2 CH 2 NH) (Example 7-14) was also confirmed that the storage stability, water resistance and friction resistance characteristics are good at the same level as in Example 1-6.

본 발명에 따른 잉크 조성물을 이용하면, 염료 기반 잉크뿐만 아니라 안료 기반 잉크에서도 장기간 보관했을 때에도 안정적으로 사용할 수 있으며 더딘 건조에서 기인한 인쇄 화상의 번짐을 줄일 수 있다. 즉, 저장 안정성 및 노즐에서의 습윤성이 탁월하며 제팅후 건조성 및 내수성(waterfastness), 내마찰번짐성(smearfastness)을 개선시킬 수 있다.By using the ink composition according to the present invention, not only dye-based ink but also pigment-based ink can be used stably even for long-term storage, and it is possible to reduce bleeding of a print image due to slow drying. That is, the storage stability and the wettability at the nozzle are excellent, and after jetting, the dryness, waterfastness, and smearfastness can be improved.

Claims (9)

색소체, 용매, 공용매(cosolvent), 습윤제, 계면활성제, 점도조절제 및 저장안정제를 포함하며,Including pigments, solvents, cosolvents, wetting agents, surfactants, viscosity modifiers and storage stabilizers, 상기 저장안정제가 화학식 1로 표시되는 질소 함유 헤테로고리 화합물인 것을 특징으로 하는 잉크 젯트 프린터용 잉크 조성물:An ink composition for an ink jet printer, wherein the storage stabilizer is a nitrogen-containing heterocyclic compound represented by Formula 1. <화학식 1><Formula 1> 상기식중, R1과 R2는 서로에 관계없이 -CH2OH, -CH2CH2OH, -CH2CH(OH)(CH2)n1CH3(n1=1∼5), -CH2CH(OH)(CH2)n2OH(n2=1∼6), -CH2CH(OH)(CH2)n3NH2(n3=1∼6), -CH2CH2O(CH2CH2O)n4CH2CH2OH(n4=1∼10), -CH2CH(OH)(CH2CH2O)n5CH2CH2OH(n5=1∼10), -CH2CH(OH)(CH2CH2NH)n6CH2CH2OH(n6=1∼9), -CH2CH(OH)(CH2CH(OH))n7CH2CH2OH(n7=1∼10), -CH2CH(OH)(CH2CH(CN))n8CH2CH2OH(n8=1∼10), -CH2CH(OH)(CH2CH(COONH2))n9CH2CH2OH(n9=1∼10), CH2CH(OH)(CH2CH(COO(CH2)mNH2))n10CH2CH2OH(n10=1∼10, m=1∼5)로 이루어진 군으로부터 선택된 하나이고,In the above formula, R 1 and R 2 are -CH 2 OH, -CH 2 CH 2 OH, -CH 2 CH (OH) (CH 2 ) n1 CH 3 (n1 = 1 to 5), -CH irrespective of each other. 2 CH (OH) (CH 2 ) n2 OH (n2 = 1 to 6), -CH 2 CH (OH) (CH 2 ) n3 NH 2 (n3 = 1 to 6), -CH 2 CH 2 O (CH 2 CH 2 O) n 4 CH 2 CH 2 OH (n 4 = 1 to 10), -CH 2 CH (OH) (CH 2 CH 2 O) n 5 CH 2 CH 2 OH (n 5 = 1 to 10), -CH 2 CH (OH) (CH 2 CH 2 NH) n 6 CH 2 CH 2 OH (n 6 = 1 to 9), -CH 2 CH (OH) (CH 2 CH (OH)) n 7 CH 2 CH 2 OH (n7 = 1 to 10), -CH 2 CH (OH) (CH 2 CH (CN)) n8 CH 2 CH 2 OH (n8 = 1-10), -CH 2 CH (OH) (CH 2 CH (COONH 2 )) n9 CH 2 CH 2 OH (n9 = 1-10), CH 2 CH (OH) (CH 2 CH (COO (CH 2 ) m NH 2 )) n10 CH 2 CH 2 OH (n10 = 1-10, m = 1∼ 5) one selected from the group consisting of, R3은 -(CH2)xCH(R4)CH(R5)(CH2)y-이고(0≤x+y≤8),R 3 is-(CH 2 ) x CH (R 4 ) CH (R 5 ) (CH 2 ) y- (0≤x + y≤8), R4와 R5는 서로에 관계없이 -H, -CH3, -CH2OH, -CH2CH2OH, CH2CH(OH)(CH2)n1CH3(n1=1∼5), -CH2CH(OH)(CH2)n2OH(n2=1∼6), -CH2CH(OH)(CH2)n3NH2(n3=1∼6), -CH2CH2O(CH2CH2O)n4CH2CH2OH(n4=1∼10), -CH2CH(OH)(CH2CH2O)n5CH2CH2OH(n5=1∼10), -CH2CH(OH)(CH2CH2NH)n6CH2CH2OH(n6=1∼9), -CH2CH(OH)(CH2CH(OH))n7CH2CH2OH(n7=1∼10), -CH2CH(OH)(CH2CH(CN))n8CH2CH2OH(n8=1∼10), -CH2CH(OH)(CH2CH(COONH2))n9CH2CH2OH(n9=1∼10),CH2CH(OH)(CH2CH(COO(CH2)mNH2))n10CH2CH2OH(n10=1∼10, m=1∼5)로 이루어진 군으로부터 선택된 하나이다.R 4 and R 5 are independently of each other -H, -CH 3 , -CH 2 OH, -CH 2 CH 2 OH, CH 2 CH (OH) (CH 2 ) n1 CH 3 (n1 = 1 to 5), -CH 2 CH (OH) (CH 2 ) n2 OH (n2 = 1-6), -CH 2 CH (OH) (CH 2 ) n3 NH 2 (n3 = 1-6), -CH 2 CH 2 O ( CH 2 CH 2 O) n 4 CH 2 CH 2 OH (n 4 = 1 to 10), -CH 2 CH (OH) (CH 2 CH 2 O) n 5 CH 2 CH 2 OH (n 5 = 1 to 10), -CH 2 CH (OH) (CH 2 CH 2 NH) n 6 CH 2 CH 2 OH (n 6 = 1-9), -CH 2 CH (OH) (CH 2 CH (OH)) n 7 CH 2 CH 2 OH (n 7 = 1-10), -CH 2 CH (OH) (CH 2 CH (CN)) n8 CH 2 CH 2 OH (n8 = 1-10), -CH 2 CH (OH) (CH 2 CH (COONH 2 )) n9 CH 2 CH 2 OH (n9 = 1-10), CH 2 CH (OH) (CH 2 CH (COO (CH 2 ) m NH 2 )) n10 CH 2 CH 2 OH (n10 = 1-10, m = 1 to 5). 제1항에 있어서, 상기 화학식 1의 질소 함유 헤테로 고리 화합물이 R1과 R2가 모두 -CH2OH이고, R3가 -CH2CH2-(x=y=0, R4=R5=H)인 1,3-비스(하이드록시메틸)-2-이미다졸리디논인 것을 특징으로 하는 잉크 조성물.According to claim 1, wherein the nitrogen-containing heterocyclic compound of Formula 1 is R 1 and R 2 are both -CH 2 OH, R 3 is -CH 2 CH 2- (x = y = 0, R 4 = R 5 = H) 1,3-bis (hydroxymethyl) -2-imidazolidinone. 제1항에 있어서, 상기 저장안정제의 함량이 잉크 조성물 100 중량부를 기준으로 하여 0.1 내지 10 중량부인 것을 특징으로 하는 잉크 조성물.The ink composition according to claim 1, wherein the content of the storage stabilizer is 0.1 to 10 parts by weight based on 100 parts by weight of the ink composition. 제1항에 있어서, 상기 색소체가 안료 또는 염료이고,The method according to claim 1, wherein the pigment is a pigment or a dye, 이의 함량이 잉크 조성물 100 중량부를 기준으로 하여 1.0 내지 10.0 중량부인 것을 특징으로 하는 잉크 조성물.Its content is an ink composition, characterized in that 1.0 to 10.0 parts by weight based on 100 parts by weight of the ink composition. 제1항에 있어서, 상기 용매가 물이고,The method of claim 1 wherein the solvent is water, 이의 함량이 잉크 조성물 100 중량부를 기준으로 하여 34.0 내지 97.6 중량부인 것을 특징으로 하는 잉크 조성물.Its content is an ink composition, characterized in that 34.0 to 97.6 parts by weight based on 100 parts by weight of the ink composition. 제1항에 있어서, 상기 공용매가 에탄올, 이소프로판올, 부탄올 및 펜탄올로이루어진 군으로부터 선택된 하나 이상이고,The method of claim 1, wherein the cosolvent is at least one selected from the group consisting of ethanol, isopropanol, butanol and pentanol, 이의 함량이 잉크 조성물 100 중량부를 기준으로 하여 1.0 내지 20.0 중량부인 것을 특징으로 하는 잉크 조성물.Its content is an ink composition, characterized in that 1.0 to 20.0 parts by weight based on 100 parts by weight of the ink composition. 제1항에 있어서, 상기 습윤제가 글리세린, 에틸렌 글리콜, 디에틸렌 글리콜, 트리에틸렌 글리콜, 프로필렌 글리콜, 디프로필렌 글리콜, 헥실렌 글리콜, 1,3-부탄디올, 1,4-부탄디올, 1,5-펜탄디올, 2-부텐-1,4-디올, 2-메틸-2-펜탄디올로 이루어진 군으로부터 선택된 하나 이상이고,The method of claim 1, wherein the humectant is glycerin, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, hexylene glycol, 1,3-butanediol, 1,4-butanediol, 1,5-pentane At least one selected from the group consisting of diol, 2-butene-1,4-diol, 2-methyl-2-pentanediol, 이의 함량이 잉크 조성물 100 중량부를 기준으로 하여 0.1 내지 20.0 중량부인 것을 특징으로 하는 잉크 조성물.The ink composition, characterized in that the content of 0.1 to 20.0 parts by weight based on 100 parts by weight of the ink composition. 제1항에 있어서, 상기 계면활성제가 탄소수 1 내지 1000의 알킬카르복실산의 염, 탄소수 1 내지 1000의 알콜 술폰산 에스테르의 염, 탄소수 1 내지 1000의 알킬술폰산의 염 및 탄소수 1 내지 1000의 알킬벤젠술폰산으로 이루어진 군으로부터 선택된 하나 이상의 음이온성 계면활성제이거나 또는 폴리옥시에틸렌 알킬 에테르(단, 알킬은 탄소수 1 내지 1000의 알킬기임), 폴리옥시에틸렌 알킬 페닐 에테르(단, 알킬은 탄소수 1 내지 1000의 알킬기임), 폴리옥시에틸렌 이차 알콜 에테르, 폴리옥시에틸렌-옥시프로필렌 블록 코폴리머, 폴리글리세린 지방산 에스테르 및 소르비탄 지방산 에스테르로 이루어진 군으로부터 선택된 하나 이상의 비이온성 계면활성제이며,The method of claim 1, wherein the surfactant is a salt of an alkyl carboxylic acid having 1 to 1000 carbon atoms, a salt of an alcohol sulfonic acid ester having 1 to 1000 carbon atoms, a salt of an alkyl sulfonic acid having 1 to 1000 carbon atoms, and an alkylbenzene having 1 to 1000 carbon atoms. One or more anionic surfactants selected from the group consisting of sulfonic acids or polyoxyethylene alkyl ethers, provided that alkyl is an alkyl group having 1 to 1000 carbon atoms, and polyoxyethylene alkyl phenyl ethers provided that alkyl is an alkyl group having 1 to 1000 carbon atoms At least one nonionic surfactant selected from the group consisting of polyoxyethylene secondary alcohol ethers, polyoxyethylene-oxypropylene block copolymers, polyglycerin fatty acid esters and sorbitan fatty acid esters, 이의 함량이 잉크 조성물 100 중량부를 기준으로 하여 0.1 내지 10.0 중량부인 것을 특징으로 하는 잉크 조성물.Its content is an ink composition, characterized in that 0.1 to 10.0 parts by weight based on 100 parts by weight of the ink composition. 제1항에 있어서, 상기 점도 조절제가 폴리비닐알콜, 카세인 및 카르복시메틸셀룰로오즈로 이루어진 군으로부터 선택된 하나 이상이고,The method of claim 1, wherein the viscosity modifier is at least one selected from the group consisting of polyvinyl alcohol, casein and carboxymethyl cellulose, 이의 함량이 잉크 조성물 100 중량부를 기준으로 하여 0.1 내지 5.0 중량부인 것을 특징으로 하는 잉크 조성물.The ink composition, characterized in that the content of 0.1 to 5.0 parts by weight based on 100 parts by weight of the ink composition.
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